Mishkat al-Masabih 9 Supplications كتاب الدعوات 31

وَعَنْ عِكْرِمَةَ عَنِ ابْنِ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُمَا قَالَ: الْمَسْأَلَةُ أَنْ تَرْفَعَ يَدَيْكَ حَذْوَ مَنْكِبَيْكَ أَوْ نَحْوِهِمَا وَالِاسْتِغْفَارُ أَنْ تُشِيرَ بِأُصْبُعٍ وَاحِدَةٍ وَالِابْتِهَالُ أَنْ تَمُدَّ يَدَيْكَ جَمِيعًا وَفِي رِوَايَةٍ قَالَ: والابتهالُ هَكَذَا وَرَفَعَ يَدَيْهِ وَجَعَلَ ظُهُورَهُمَا مِمَّا يَلِي وَجْهَهُ. رَوَاهُ أَبُو دَاوُ

‘Ikrima quoted Ibn ‘Abbas as saying, “When asking for something you should raise your hands opposite your shoulders or thereabout, when asking for forgiveness you should point with one finger, and when making earnest supplication you should stretch out both your hands.” In a version he said, “Earnest supplication should be made thus,” raising his hands and putting their backs next his face. Abu Dawud transmitted it.