Sura 26 Ash-Shu'ara' (The Poets), aya 194

1. عَلَىٰ قَلْبِكَ لِتَكُونَ مِنَ الْمُنْذِرِينَ

   Upon your heart, (O Muhammad) - that you may be of the warners -

   26:194

Tafsiri: Saheeh International