عَنْ عَلِيٍّ رَضِيَ اللَّهُ عَنْهُ قَالَ قَالَ لِي رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ لَا تُتْبِعِ النَّظْرَةَ النَّظْرَةَ فَإِنَّ الْأُولَى لَكَ وَلَيْسَ لَكَ الْأَخِيرَةُ
It is narrated from Sayyiduna Ali (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said to me: Do not follow one glance with another glance; the first glance is forgiven, but you are not permitted the second.