وَإِنِ اضْطَجَعَ عَلَى جَنْبِهِ وَوَجْهُهُ إِلَى الْقِبْلَةِ وَأَوْمَأَ: جَازَ.
Translation: If the patient lies on the side facing the qiblah and makes gestures, this too is permissible.
Idtija' means lying on the side. Hanafi jurists prefer the supine posture as head gestures may be easier, but side-lying prayer oriented toward the qiblah is valid.