Hadithcore
Riyad as-Salihin, 1639

Ibn 'Umar (May Allah be pleased with them) said:

The Messenger of Allah (ﷺ) saw a boy, some portion of whose head was shaved and some of it was left out. He prohibited them from that and said, "Shave the whole of it or leave the whole of it." <b>[Muslim]</b>.

وعنه قال‏:‏ رأى رسول الله صلى الله عليه وسلم صبيًا قد حلق بعض شعر رأسه وترك بعضه فنهاهم عن ذلك وقال‏:‏ ‏

‏احلقوه كله، أو اتركوه كله‏

‏‏.‏ رواه أبو داود بإسناد صحيح على شرط البخاري ومسلم‏.‏

References1 variant
In-Book Reference
Book 17, Hadith 129
Sharh · explanationclick to expand
<b>Guidance from the Hadiths:</b><br> 1) It is forbidden to shave part of the head and leave the other unshaven, because doing this causes deformation to the head and is unfair.<br> 2) When the Islamic law forbids something, it guides to what is more beneficial and better for the person. When it forbade Qaza‘, it guided Muslims to shave all the hair or leave all of it.<br> A valuable benefit:<br> Al-Hāfiz Ibn al-Qayyim (may Allah have mercy upon him) said in his book Tuhfat Al-Mawdūd fi Ahkām Al-Mawlūd:<br> “Qaza‘ is to shave parts of the boy’s head and leave other parts unshaved. Our Shaykh said: ‘This indicates the perfect love of Allah Almighty and His Messenger (may Allah’s peace and blessings be upon him) for justice, as he (may Allah’s peace and blessings be upon him) commanded it even in man’s personal affairs. He forbade one to shave a part of his head and leave the other unshaven because this involves injustice to the head, when part of it is covered with hair while the other part is bare. Another example is when the Prophet (may Allah’s peace and blessings be upon him) forbade sitting between the sun and the shade, because this is injustice done to some parts of the body. He also forbade that a person wears a sandal in one foot, and said that one should either wear sandals on both feet or leave both of them bare.”<br> There are four forms of Qaza‘:<br> 1- To shave some parts from the different sides of his head.<br> 2- To shave the middle of the head and leave the sides unshaven, like what the Christian deacons do with their hair.<br> 3- To shave the sides and leave the middle of the head unshaven, like what is done by many lowly and mean people.<br> 4- To shave the front part and leave the back.<br> All these forms are included in the meaning of Qaza‘, and Allah knows best.” [End of quote]<br> <br> <br> <br> <b>Words in the Hadith:</b><br> Qaza‘: to shave part of the head and leave the rest unshaved.