Anas (may Allah be pleased with him) reported: One of the sons of Abu Talha was ailing. Abu Talha went out and the boy died in his absence. When he came back, he inquired: "How is the boy?" Umm Sulaym, the boy’s mother, replied: "He could not be more tranquil than he is now." She served him supper, and he ate it and then they had sexual intercourse. Afterwards, she said to him: "Arrange for the burial of the boy." In the morning, Abu Talha went to the Messenger of Allah (may Allah's peace and blessings be upon him) and informed him of what had happened. He asked: "Did you sleep together last night?" Abu Talha said: ‘Yes.’ So the Prophet (may Allah's peace and blessings be upon him) supplicated: "O Allah, bless them." Later, she gave birth to a baby boy. Abu Talha said to me: "Pick up the boy and take him to the Prophet." He sent some dates with him. The Prophet (may Allah's peace and blessings be upon him) asked: "Is there anything with him?" He said: "Yes, some dates." The Prophet (may Allah's peace and blessings be upon him) took a date, chewed it, and put it in the mouth of the baby, rubbing the chewed date around the baby's gum. He named him ‘Abdullāh.
In another version: Ibn ‘Uyaynah reported: “A man from the Ansār said: ‘I saw nine sons (of this boy), all of whom were reciters of the Qur’an.’”
Another version reads: “Abu Talha’s son from Umm Sulaym died. She asked family members not to tell Abu Talha about his son, as she would inform him herself. Abu Talha came home and she gave him supper. He ate and drank. She then beautified herself in the best way she had ever done, and he slept with her. Noticing that he was gratified, she said: ‘O Abu Talha. If some people borrow something from another family and then the lenders ask for their item, would they refuse to give it back to them?’ He said: ‘No.’ She said: ‘Then, seek divine reward for the loss of your son.’ Abu Talha got angry and said: ‘You did not tell me this until I stained myself (with sexual intercourse), and now you tell me about my son!’ He went to the Messenger of Allah (may Allah's peace and blessings be upon him) and told him about the matter, and he said: ‘May Allah bless the night you spent together!’ And she conceived a child. One day the Messenger of Allah (may Allah's peace and blessings be upon him) was on a journey and she was with him. Whenever he came back from a journey to Madīnah, he would not enter it at night. As they approached Madīnah, she felt labor pains. Abu Talha remained with her and the Messenger of Allah (may Allah's peace and blessings be upon him) carried on. Abu Talha said: ‘O Lord, You know that I love to go out with the Messenger of Allah when he goes out and enter with him when he enters, and I have been detained as You see.’ Umm Sulaym said: ‘O Abu Talha, I do not feel as much pain as I was feeling earlier, so we had better move on.’ We carried on and she felt the birth pangs as they reached Madīnah and gave birth to a baby boy. My mother said to me: ‘O Anas, no one should suckle him until you take him to the Messenger of Allah in the early morning. Next morning, I carried the baby to the Messenger of Allah, may Allah's peace and blessings be upon him… and he narrated the rest of the story.
Authentic hadith -
Narrated by Bukhari & Muslim