It is narrated from Sayyiduna Abu al-Darda' (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Test people (that is, when you come to know their inner states and hidden faults), and you will come to dislike them."
In the chain of this hadith, Abu Bakr bin Abi Maryam is a weak narrator; moreover, the hadith scholars have criticised its chain because of the tadlis (concealment in transmission) of Baqiyyah bin al-Walid, and have declared it da'if (weak).
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب الأدب / 2723
Hadith Gradingمحدثین:إسناده ضعيف
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :إسناده ضعيف. » «أخرجه مسند البزار برقم: 4101»