Musnad Ahmad

It is narrated from Hazrat Anas (may Allah be pleased with him) that there was a household among the Ansar who had a camel used for carrying water. One day, the camel became very unruly and did not allow anyone to ride it. They came to the Prophet (peace and blessings be upon him) and said, "We had a camel on which we used to bring water, but today it has become so wild that it does not let us ride it at all. Our fields and gardens are drying up." The Prophet (peace and blessings be upon him) said to the companions (may Allah be pleased with them), "Get up," and set out with them. When he reached there and entered the garden, he saw that the camel was in a corner. The Prophet (peace and blessings be upon him) walked towards it. Seeing this, the Ansar said, "O Messenger of Allah (peace and blessings be upon him)! It has become like a wild dog. We fear it may attack you." The Prophet (peace and blessings be upon him) said, "It will not harm me." When the camel saw the Prophet (peace and blessings be upon him), it came to him and knelt down before him. The Prophet (peace and blessings be upon him) held it by its forehead, and it became even more obedient than before, and the Prophet (peace and blessings be upon him) put it back to work. Seeing this, the companions (may Allah be pleased with them) said, "O Messenger of Allah (peace and blessings be upon him)! If this unintelligent animal can prostrate to you, then we, being intelligent, have even more right to prostrate to you." The Prophet (peace and blessings be upon him) said, "It is not permissible for any human to prostrate to another human. If it were permissible, I would have ordered a woman to prostrate to her husband, for his right over her is greater." By Him in Whose hand is my soul, if a man's whole body, from the soles of his feet to the parting of his hair, were covered with sores and blood and pus flowed from them, and his wife came and licked them, even then she would not have fulfilled his right. Hazrat Anas (may Allah be pleased with him) says that once we were taken with forty Ansari men to Abdul Malik in Syria so that he could fix our stipend. On the way back, when we reached Faj al-Naqah, he led us in two rak'ahs of Asr prayer, then after saying salam, he went to his tent. The people stood up and began to pray two more rak'ahs. Seeing this, Hazrat Anas (may Allah be pleased with him) said, "May Allah disfigure these faces! By Allah, they neither acted upon the Sunnah nor accepted the concession. I bear witness that I heard the Prophet (peace and blessings be upon him) say: Some people will go to extremes in religion and will leave the religion just as an arrow leaves the prey."