وَمِنۡ ءَايَٰتِهِۦ مَنَامُكُم بِٱلَّيۡلِ وَٱلنَّهَارِ

Al-Qur`an 30:23

Among His signs are your sleep, at night or in daytime

عَنْ ثُمَامَةَ، عَنْ أَنَسٍ، أَنَّ أُمَّ سُلَيْمٍ، كَانَتْ تَبْسُطُ لِلنَّبِيِّ صلى الله عليه وسلم نِطَعًا فَيَقِيلُ عِنْدَهَا عَلَى ذَلِكَ النِّطَعِ

Sahih al-Bukhari 6281

Narrated Thumamaؓ, Anasؓ said, “Um Sulaimؓ used to spread a leather sheet for the Prophetﷺ peace be upon him and he used to take a midday nap on that leather sheet at her home.”

Take a nap after Duhr (noon) prayer. It is a sunnah of Prophetﷺ peace be upon him.