It is narrated from Sayyiduna Abu Maryam al-Saluli (may Allah be pleased with him) that he heard the Prophet of Allah (peace and blessings be upon him) saying: 'Allahumma ighfir lil-muhalliqin' (O Allah, forgive those who shave their heads). A man from among those present said: "O Prophet of Allah! And those who shorten their hair too?" The Prophet (peace and blessings be upon him) said (again): 'Allahumma ighfir lil-muhalliqin' (O Allah, forgive those who shave their heads). The man said (again): "O Prophet of Allah! And those who shorten their hair too?" Until, when it came to the fourth time, he (peace and blessings be upon him) said: 'Wa lil-muqassirin' (And those who shorten their hair too).
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Burayd bin Abi Maryam (may Allah have mercy on him) except Hibban bin Yasar (may Allah have mercy on him)."
Hadith Referenceالمعجم الأوسط / باب الألف / 2914
Hadith Takhrij«أخرجه أحمد فى «مسنده» برقم: 17872، وابن أبي شيبة فى «مصنفه» برقم: 13797، والطبراني فى «الكبير» برقم: 604»