Musnad Ahmad

It is narrated from Hazrat Abu Bakrah (may Allah be pleased with him) that once the Prophet (peace and blessings be upon him) was riding his mule and Abu Bakrah (may Allah be pleased with him) was also present, when people brought a pregnant woman. She said that she had committed adultery, so she should be stoned. The Prophet (peace and blessings be upon him) said to her, "Take benefit from Allah's concealment." She went back. After a short while, she came again while the Prophet (peace and blessings be upon him) was still on the mule. She again said, "O Messenger of Allah (peace and blessings be upon him), have me stoned." The Prophet (peace and blessings be upon him) gave the same reply. When she came for the third time, she held the reins of the Prophet's mule and said, "I adjure you by Allah, have me stoned." The Prophet (peace and blessings be upon him) said, "Alright, go until you give birth to the child." She went away, gave birth to the child, and came again to the Prophet (peace and blessings be upon him) and spoke to him. The Prophet (peace and blessings be upon him) said, "Go until you become pure from postnatal bleeding." She went away and after some time came again and said that she had become pure. The Prophet (peace and blessings be upon him) called some women and ordered them to confirm her purity. They came and testified before the Prophet (peace and blessings be upon him) that she had become pure. So the Prophet (peace and blessings be upon him) ordered a pit to be dug up to her chest. Then the Prophet (peace and blessings be upon him) came with the Muslims, picked up a pebble the size of a chickpea, threw it at her, and went back. He told the Muslims, "Now you stone her, but avoid hitting the face." When she became cold (i.e., died), he ordered her to be taken out, offered her funeral prayer, and said, "If her reward were distributed among all the people of Hijaz, it would suffice for them all."