Hadithcore
Mishkat al-Masabih, 4149

Salman b. ‘Amir ad Dabbl told that he heard God's messenger say, “Along with a boy there is an <i>‘aqiqa</i>, so shed blood on his behalf and remove injury from him.”* *This is variously explained as shaving the hair of the infant, or removing the impurities with which it is defiled at birth, or even circumcision. Bukhari transmitted it.

عَن سلمانَ بن عامرٍ الضَّبي قَالَ: سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ: «مَعَ الْغُلَامِ عَقِيقَةٌ فَأَهْرِيقُوا عَنْهُ دَمًا وأمِيطوا عَنهُ الْأَذَى» . رَوَاهُ البُخَارِيّ

References1 variant
In-Book Reference
Book 20, Hadith 84