Abu Hurairah Sa'di said: I asked Sayyiduna Hasan bin Ali (may Allah be pleased with them both): What do you remember from the Messenger of Allah (peace and blessings be upon him)? He replied: A man asked the Messenger of Allah (peace and blessings be upon him) about an issue which I do not know. The Messenger of Allah (peace and blessings be upon him) replied: "Leave that which causes you doubt for that which does not cause you doubt."
Hadith Takhrijاس حدیث کی سند صحیح ہے۔ دیکھئے: [ترمذي 2518] ، [نسائي 5747] ، [أبويعلی 6762] ، [ابن حبان 722] ، [موارد الظمآن 512] ۔ ابوالجوزاء يا ابوالحوراء کا نام ربيعہ بن شیبان ہے۔
Brief Explanation
(Commentary on Hadith 2567)
That is, just as you have abandoned the prohibited things (muharramat) in which there is no doubt or uncertainty, in the same way, abandon the doubtful matter as well, and leave aside what is doubtful and do that in which there is no doubt or uncertainty.