[1/-] al-Kafi: Ahmad b. Muhammad al-Asimi from Ali b. al-Hasan al-Maythami from Ali b. Asbat from his paternal uncle Ya`qub b. Salim from Abi Abdillah عليه السلام who said: there was a woman in Madina who used to be approached by men [she was a prostitute], this news reached Umar so he sent for her and frightened her and ordered that she be brought to him, so the woman became terrified and started getting contractions, she fled to one of the houses and gave premature birth to a boy, the boy cried out loud and then died, so it entered in his (Umar’s) heart what Allah wished to enter because of his frightening of the woman and the death of the boy, some of his sitting companions said to him: O commander of the faithful you don’t have to do anything because of this, while others said: what is this? [belittling it – as if to say it is nothing], he said: ask Aba al-Hasan, so Abu al-Hasan عليه السلام said to them: if you have done Ijtihad then you have not got it right, and if you have said it based on your personal opinion then you have made a mistake, then he said: upon you is to give the blood-money of the child.

[-/1] الكافي: أحمد بن محمد العاصمي، عن علي بن الحسن الميثمي، عن علي بن أسباط، عن عمه يعقوب بن سالم، عن أبي عبدالله عليه السلام قال: كانت امرأة بالمدينة تؤتى فبلغ ذلك عمر فبعث إليها فروعها وأمر أن يجاء بها إليه ففزعت المرأة فأخذها الطلق فانطلقت إلى بعض الدور فولدت غلاما فاستهل الغلام ثم مات فدخل عليه من روعة المرأة ومن موت الغلام ما شاء الله فقال له بعض جلسائه: يا أميرالمؤمنين ما عليك من هذا شئ وقال بعضهم: وما هذا؟ قال: سلوا أبا الحسن فقال لهم أبوالحسن عليه السلام: لئن كنتم اجتهدتم ما أصبتم ولئن كنتم قلتم برأيكم لقد أخطأتم، ثم قال: عليك دية الصبي