وَعَنْ أَنَسٍ
قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «الدُّعَاءُ مُخُّ الْعِبَادَةِ»
Anas reported God’s messenger as saying, “Supplication is the pith of worship.”
Mishkat al-Masabih 2135, Book 10, Supplications, Hadith 9. 1 min read