Al-Baqarah 2:242

Medinan · The Cow

كَذَٰلِكَ يُبَيِّنُ ٱللَّهُ لَكُمْ ءَايَـٰتِهِۦ لَعَلَّكُمْ تَعْقِلُونَ

Thus does Allah make clear to you His verses that you might use reason