مناسك حج - مكارم شيرازى، ناصر - الصفحة ٢٤١ - Mustahab Acts of Ihram
to perform that Ghusl again and after performing this Ghusl if Mukallaf( accountable; a Muslim who has reached the age of puberty )wears clothes or eats things which are Haraam for Muhrim then performing again is Mustahab and if Mukallaf performs Ghusl in the day, that Ghusl suffices until the end of the next night and if it is performed in the night then it suffices until the end of the next day; But he/ she should perform the Ghusl again if the ablution is invalidated before Ihram and after Ghusl.
٤- Saying the following sentences while wearing the two clothing of Ihram:
الحَمْدُ لِلّه الَّذي رَزَقَني مَا اواري بِه عَوْرَتِي و اؤدِّي فيهِ فَرْضي وَ أعْبُدُ فيهِ رَبِّي و انْتَهي فيه إلى مَا امَرَنِي الحَمْدُ لِلّهِ الَّذي قَصَدْتُهُ فَبَلَّغَني و أرَدْتُهُ فَاعانَنى وَ قَبِلَني وَ لَمْ يَقْطَعْ بي وَ وَجْهَهُ أرَدْتُ فَسَلَّمَني فَهُوَ حِصْني وَ كَهْفِي و حِرْزي وَ ظَهْري وَ مَلاذي وَ رَجائى وَ مَنجاي و ذُخري وَ عُدَّتى في شِدَّتي وَ رَخائي