Surah Ali 'Imran 3:35

إِذْ قَالَتِ ٱمْرَأَتُ عِمْرَٰنَ رَبِّ إِنِّى نَذَرْتُ لَكَ مَا فِى بَطْنِى مُحَرَّرًا فَتَقَبَّلْ مِنِّىٓ ۖ إِنَّكَ أَنتَ ٱلسَّمِيعُ ٱلْعَلِيمُ

[Mention, O Muḥammad], when the wife of ʿImrān said, "My Lord, indeed I have pledged to You what is in my womb, consecrated [for Your service], so accept this from me. Indeed, You are the Hearing, the Knowing."

Translation: Saheeh International

Tafsir

Mention when the wife of ‘Imrān Hanna said after she had reached old age and longed for a child and supplicated to God and sensed that she was carrying child ‘O Lord I have vowed to offer You what is within my womb as a consecration one liberated and delivered from the distractions of this world for the service of …

Excerpt from Tafsir al-Jalalayn, commentary on 3:35, via Quran.com. The reader has the full commentary and 9 more tafsirs.