Principle of “Whomsoever it reaches …”
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[1/91] الكافي: علي بن إبراهيم، عن أبيه، عن ابن أبي عمير، عن هشام بن سالم، عن أبي عبدالله عليه السلام قال: من سمع شيئا من الثواب على شئ فصنعه كان له وإن لم يكن على ما بلغه
1. [1/91] al-Kafi: Ali b. Ibrahim from his father from Ibn Abi Umayr from Hisham b. Salim from Abi Abdillah عليه السلام who said: whomsoever hears something about the Thawab to be got by doing a certain act and goes on to do it, then it (the Thawab mentioned) will be for him, even if it (the report conveying the Thawab) was not as had reached him (i.e. was not accurate).
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[-/2] محاسن البرقي: و عنه عن علي بن الحكم عن هشام بن سالم عن أبي عبد الله عليه السلام قال من بلغه عن النبي صلى الله عليه وآله شيء من الثواب فعمله كان أجر ذلك له و إن كان رسول الله صلى الله عليه وآله لم يقله
2. [2/-] Mahasin of al-Barqi: And from him (Muhammad b. Khalid al-Barqi) from Ali b. al-Hakam from Hisham b. Salim from Abi Abdillah عليه السلام who said: whomsoever it reaches something about the Thawab – attributed to the prophet صلى الله عليه وآله – and he acts upon it, he will have the rewards of that, even if the messenger of Allah صلى الله عليه وآله had not said it.