Surah Ali 'Imran 3:44

ذَٰلِكَ مِنْ أَنۢبَآءِ ٱلْغَيْبِ نُوحِيهِ إِلَيْكَ ۚ وَمَا كُنتَ لَدَيْهِمْ إِذْ يُلْقُونَ أَقْلَـٰمَهُمْ أَيُّهُمْ يَكْفُلُ مَرْيَمَ وَمَا كُنتَ لَدَيْهِمْ إِذْ يَخْتَصِمُونَ

That is from the news of the unseen which We reveal to you, [O Muḥammad]. And you were not with them when they cast their pens as to which of them should be responsible for Mary. Nor were you with them when they disputed.

Translation: Saheeh International

Tafsir

That which has been mentioned of the matter of Zachariah and Mary is of the tidings of the Unseen of the news of what was unknown to you. We reveal it to you O Muhammad (s) for you were not with them when they were casting quills in the water drawing their lots so that it be manifested to them which of them should …

Excerpt from Tafsir al-Jalalayn, commentary on 3:44, via Quran.com. The reader has the full commentary and 9 more tafsirs.