Hazrat Abdur Rahman bin Ali bin Shaiban narrates from his respected father, Sayyiduna Ali bin Shaiban (may Allah be pleased with him), that he was a member of the delegation (that came to the service of the Noble Prophet, peace and blessings be upon him). He says: We performed prayer behind the Noble Prophet (peace and blessings be upon him), and he glanced with the corner of his eye at a man who was not straightening his back in bowing (ruku) and prostration (sujud). Then, when the Messenger of Allah (peace and blessings be upon him) completed the prayer, he said: "O assembly of Muslims, indeed the prayer of the one who does not straighten his back in bowing and prostration is not valid." This is the hadith of Ahmad bin al-Muqaddam.

Alqamah bin Wa'il narrates from his father, Sayyiduna Wa'il (may Allah be pleased with him), that when the Prophet (peace and blessings of Allah be upon him) performed ruku', he would keep his fingers spread apart.

And the explanation that placing both hands on both knees abrogates the act of *tadbeeq*—because the act of *tadbeeq* was earlier, and the act of placing both hands on the knees came after it. Therefore, the earlier act is abrogated and the later act is the abrogator.

Sayyiduna Abdullah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) taught us the prayer, so «‏‏‏‏اللهُ أَكْبَرُ» ‏‏‏‏ said, and when he intended to bow (ruku‘), he joined his two hands and placed them between his knees, then performed ruku‘. When Sayyiduna Sa‘d (may Allah be pleased with him) heard of this, he said, "My brother has spoken the truth; this is how we used to do it, then we were commanded regarding it," meaning (to) hold the knees with both hands.

And indeed, the act of "tatbeeq" (placing the hands between the knees during bowing) is prohibited. It is not permissible that both "tatbeeq" and placing the hands on the knees are correct acts, just as we have mentioned (different) hadiths regarding the recitation of the Prophet صلی اللہ علیہ وسلم in prayers, and have mentioned the differences among the Companions regarding those surahs which the Prophet صلی اللہ علیہ وسلم used to recite in prayer, or as we have mentioned the differences among the Companions regarding the number of times the Prophet صلی اللہ علیہ وسلم washed the limbs during ablution. All these methods are permissible, but the act of "tatbeeq" in bowing has been abrogated and prohibited, and the Sunnah method is to place both hands on the knees.

Hazrat Mus'ab bin Sa'd narrates that when I used to perform ruku', I would place both my hands between my knees. My respected father, Sayyiduna Sa'd (may Allah be pleased with him), saw me doing this and forbade me, and said: Indeed, we used to do the same, then we were forbidden from it, then we were commanded to raise them towards our knees (i.e., to place them on the knees).

It is narrated from Sayyiduna Rifa’ah bin Rafi’ (may Allah be pleased with him) that a man entered the mosque and performed prayer, then the complete hadith is mentioned. He says that the Noble Prophet (peace and blessings of Allah be upon him) said: "Then when you bow (in ruku’), place your hands firmly on your knees until your bones become settled (i.e., you are at ease) in ruku’."

Hazrat Salim Al-Barrad (may Allah have mercy on him) narrates that we presented ourselves before Sayyiduna Abu Mas’ud and Sayyiduna Uqbah bin Amr (may Allah be pleased with them both). So we requested,“Please describe to us the (manner of) prayer of the Messenger of Allah (peace and blessings be upon him).”So they stood before us in the mosque (and began to demonstrate the prayer). They said «‏‏‏‏اللهُ أَكْبَرُ» ‏‏‏‏, then when they bowed (in ruku‘), they said «‏‏‏‏اللهُ أَكْبَرُ» ‏‏‏‏, and placed both their palms on both their knees. And they placed their fingers underneath them (on the upper part of the shin), then they distanced their elbows (from their sides), then (at the end) said,“We saw the Messenger of Allah (peace and blessings be upon him) praying in this manner.”

It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Noble Prophet (peace and blessings of Allah be upon him) said: "As for the bowing (ruku'), then declare the greatness of your Lord, the Exalted, in it."

Sayyiduna Uqbah bin Amir (may Allah be pleased with him) narrates that when (this verse) «‏‏‏‏فَسَبِّحْ بِاسْمِ رَبِّكَ الْعَظِيمِ» ‏‏‏‏ [ سورة الواقعة ] (“Glorify the name of your Lord, the Most Great”) was revealed, the Messenger of Allah (peace and blessings be upon him) commanded us:“Recite it in your bowing (ruku).”