It is narrated from Hazrat Abu Qilabah (may Allah have mercy on him) that he saw Sayyiduna Malik bin Huwairith (may Allah be pleased with him), when he would pray, he would say «‏‏‏‏اللهُ أَكْبَرُ» ‏‏‏‏ and raise both his hands, and when he intended to bow (ruku‘), he would raise both his hands, and when he raised his head from ruku‘, he would raise both his hands, and he stated that indeed the Messenger of Allah (peace and blessings be upon him) used to pray in this manner as well.