Surah Al-Isra' (The Night Journey), Verse 28

وَاِمَّا تُعْرِضَنَّ عَنْهُمُ ابْتِغَآءَ رَحْمَةٍ مِّنْ رَّبِّكَ تَرْجُوْهَا فَقُلْ لَّهُمْ قَوْلًا مَّیْسُوْرًا ۟

Wa immaa tu'ridanna 'anhum ubtighaaa'a rahmatim mir rabbika tarjoohaa faqul lahum qawlam maisooraa

“And even if thou hast to turn away from them in pursuit of the Mercy from thy Lord which thou dost expect, yet speak to them a word of easy kindness.”

Quran 17:28 (Yusuf Ali Translation)