اَلتَّكْوِينُ 48:18

وَقَالَ يُوسُفُ لِأَبِيهِ: «لَيْسَ هَكَذَا يَا أَبِي، لِأَنَّ هَذَا هُوَ ٱلْبِكْرُ. ضَعْ يَمِينَكَ عَلَى رَأْسِهِ».

And Joseph said unto his father, Not so, my father: for this is the firstborn; put thy right hand upon his head.