AbuBakr ibn AbdurRahman said:

The messenger of Marwan whom he sent to Umm Ma'qil reported to me.

She said: AbuMa'qil accompanied the Messenger of Allah ﷺ during hajj. When he came (to her) she said: You know that hajj is incumbent on me. They walked until they visited him (i.e. the Prophet) and she asked (him): Messenger of Allah, hajj is due from me, and AbuMa'qil has a camel.

AbuMa'qil said: She spoke the truth, I have dedicated it to the cause of Allah.

The Messenger of Allah ﷺ said: Give it to her, that is in the cause of Allah. So he gave the camel to her.

She then said: Messenger of Allah, I am a woman who has become aged and ill. Is there any action which would be sufficient for me as my hajj?

He replied: umrah performed during Ramadan is sufficient as hajj.

حَدَّثَنَا أَبُو كَامِلٍ، حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ إِبْرَاهِيمَ بْنِ مُهَاجِرٍ، عَنْ أَبِي بَكْرِ بْنِ عَبْدِ الرَّحْمَنِ، أَخْبَرَنِي رَسُولُ مَرْوَانَ الَّذِي أَرْسَلَ إِلَى أُمِّ مَعْقِلٍ قَالَتْ كَانَ أَبُو مَعْقِلٍ حَاجًّا مَعَ رَسُولِ اللَّهِ ﷺ فَلَمَّا قَدِمَ قَالَتْ أُمُّ مَعْقِلٍ قَدْ عَلِمْتَ أَنَّ عَلَىَّ حَجَّةً فَانْطَلَقَا يَمْشِيَانِ حَتَّى دَخَلاَ عَلَيْهِ فَقَالَتْ يَا رَسُولَ اللَّهِ إِنَّ عَلَىَّ حَجَّةً وَإِنَّ لأَبِي مَعْقِلٍ بَكْرًا . قَالَ أَبُو مَعْقِلٍ صَدَقَتْ جَعَلْتُهُ فِي سَبِيلِ اللَّهِ فَقَالَ رَسُولُ اللَّهِ ﷺ " أَعْطِهَا فَلْتَحُجَّ عَلَيْهِ فَإِنَّهُ فِي سَبِيلِ اللَّهِ " . فَأَعْطَاهَا الْبَكْرَ فَقَالَتْ يَا رَسُولَ اللَّهِ إِنِّي امْرَأَةٌ قَدْ كَبِرْتُ وَسَقِمْتُ فَهَلْ مِنْ عَمَلٍ يُجْزِئُ عَنِّي مِنْ حَجَّتِي قَالَ " عُمْرَةٌ فِي رَمَضَانَ تُجْزِئُ حَجَّةً " .