It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that he said: "The Messenger of Allah (peace and blessings be upon him) was on the road to Makkah, and he (peace and blessings be upon him) passed by a mountain called Jumdan. He (peace and blessings be upon him) said: 'This is Jumdan. Keep moving; the mufarridun have gone ahead.' He (peace and blessings be upon him) said this twice. The Companions said: 'O Messenger of Allah! Who are the mufarridun?' He (peace and blessings be upon him) said: 'The men who remember Allah much and the women who remember (Him) much.' (Then he (peace and blessings be upon him) said:) 'May Allah have mercy on those who shave their heads.' The Companions said: 'O Messenger of Allah! And those who trim their hair too (pray for them).' He (peace and blessings be upon him) said: 'May Allah have mercy on those who shave their heads.' They said: 'O Messenger of Allah! And those who trim their hair too.' He (peace and blessings be upon him) said: 'May Allah have mercy on those who shave their heads.' They said: 'O Messenger of Allah! And those who trim their hair too.' Then he (peace and blessings be upon him) said: 'And those who trim their hair too.'"
Hadith Referenceالمعجم الأوسط / باب الألف / 2773
Hadith Takhrij«أخرجه البخاري فى «صحيحه» برقم: 1728، ومسلم فى «صحيحه» برقم: 1302، 2676، وابن حبان فى «صحيحه» برقم: 858، والحاكم فى «المستدرك» برقم: 1829، والترمذي فى «جامعه» برقم: 3596، وابن ماجه فى «سننه» برقم: 3043، والبيهقي فى «السنن الكبرى» برقم: 9677، وأحمد فى «مسنده» برقم: 7279، 8406، 9456، والبزار فى «مسنده» برقم: 9779، وابن أبي شيبة فى «مصنفه» برقم: 13790، والطحاوي فى «شرح مشكل الآثار» برقم: 1363»