Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:78:33 –

And full-breasted ˹companions˺ of equal age  

and buxom maidens (kawā‘ib is the plural of kā‘ib) of equal age (atrāb is the plural of tirb),
القرآن:٧٨:٣٣ –

وَكَوَاعِبَ أَتْرَابًا  

{وكواعب} جواري تكعبت ثديهن جمع كاعب {أترابا} على سن واحد، جمع تِرب بكسر التاء وسكون الراء.

See similar narrations below:

Collected by Qurʾān
quran:56:37 –

Devoted ˹to their husbands˺ and of equal age,  

amorous (read ‘uruban or ‘urban, plural of ‘arūb, meaning ‘a woman passionately enamoured of her spouse’), of equal age (atrāb is the plural of tirb),
القرآن:٥٦:٣٧ –

عُرُبًا أَتْرَابًا  

{عرُْبا} بضم الراء وسكونها جمع عروب وهي المتحببة إلى زوجها عشقا له {أترابا} جمع ترب، أي مستويات في السن.