Applying something to his head to keep his hair together

It was narrated from Ibn ‘Umar that Hafsah, the wife of the Prophet (ﷺ), said:

“I said: ‘O Messenger of Allah, what is the matter with people who have exited Ihram when you have not exited your Ihram?’ He said: ‘I have applied something to my head to keep my hair together, and I have garlanded my sacrificial animal, so I will not exit Ihram until I have offered my sacrifice.’”

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا أَبُو أُسَامَةَ، عَنْ عُبَيْدِ اللَّهِ بْنِ عُمَرَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ حَفْصَةَ، زَوْجَ النَّبِيِّ ـ صلى الله عليه وسلم ـ قَالَتْ قُلْتُ يَا رَسُولَ اللَّهِ مَا شَأْنُ النَّاسِ حَلُّوا وَلَمْ تَحِلَّ أَنْتَ مِنْ عُمْرَتِكَ قَالَ ‏

‏ إِنِّي لَبَّدْتُ رَأْسِي وَقَلَّدْتُ هَدْيِي فَلاَ أَحِلُّ حَتَّى أَنْحَرَ ‏

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It was narrated from Salim, from his father:

“I heard the Messenger of Allah (ﷺ) reciting the Talbiyah when he entered Ihram with something applied to his head to keep the hair together.’”

حَدَّثَنَا أَحْمَدُ بْنُ عَمْرِو بْنِ السَّرْحِ الْمِصْرِيُّ، أَنْبَأَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ، أَنْبَأَنَا يُونُسُ، عَنِ ابْنِ شِهَابٍ، عَنْ سَالِمٍ، عَنْ أَبِيهِ، سَمِعْتُ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ يُهِلُّ مُلَبِّدًا ‏.‏