حَتَّى يُحَاذِيَ بِإِبْهَامَيْهِ شَحْمَتَي أُذُنَيْهِ
Meaning: Until his thumbs are level with his earlobes.
Ibham means thumb; shahmat al-udhun means the soft earlobe. The requirement stated here is alignment, not necessarily touching the ears. The palms face the qiblah.