Al-Isra' - 17:28

وَإِمَّا تُعْرِضَنَّ عَنْهُمُ ابْتِغَاء رَحْمَةٍ مِّن رَّبِّكَ تَرْجُوهَا فَقُل لَّهُمْ قَوْلاً مَّيْسُورًا
[17:28]
And if you turn away from them to seek mercy from your Lord, which you hope for, speak to them a gentle word.
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.
But if thou turn away from them, seeking mercy from thy Lord, for which thou hopest, then speak unto them a reasonable word.