It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that a beggar came to him and asked (for something). Ibn Abbas (may Allah be pleased with them both) asked him: Do you testify that there is no god but Allah? He said: Yes. He asked: Do you testify that Muhammad (peace and blessings be upon him) is the Messenger of Allah? He said: Yes. He asked: Do you perform the five prayers? He said: Yes. He asked: Do you fast in Ramadan? He said: Yes. He said: Listen! You have a right over us. O boy, give him a garment to wear, for I heard the Messenger of Allah (peace and blessings be upon him) say: "Whoever clothes a Muslim with a garment remains in the protection and covering of Allah as long as a thread or a strand of it remains on him." This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.