Sayyiduna Abu Hurayrah (may Allah be pleased with him) reports about the Prophet (peace and blessings be upon him): When he (peace and blessings be upon him) was lost in thought, he would often touch his beard.
Al-Bazzar recorded it; its chain contains a narrator, Rishdin bin Sa'd; the majority declared him da'if (weak), though he has (also) been declared trustworthy.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب العلم / 730
Hadith Gradingمحدثین:إسنادہ ضعیف
Hadith Takhrij«اورده المؤلف فى كشف الاستار 165 ، أخرجه البحر الزخار المعروف بمسند البزار 10 - 18 برقم: 7914»