Mishkat al-Masabih 1577
‘Ata’ b. Abu Rabah said Ibn ‘Abbas asked whether he would like him to show him a woman who would go to paradise. When he replied that he certainly would, he said:
This black woman came to the Prophet and said, “Messenger of God, I am subject to fits and become uncovered, so make supplication to God for me.” He replied, “If you wish you may endure it and be rewarded with paradise, but if your wish I shall make supplication to God to cure you.” She said, “I shall endure it.” Then she added, “But since I become uncovered, make supplication to God that that may not happen.” He then made supplication for her. 

(Bukhari and Muslim.)
وَعَنْ عَطَاءِ بْنِ أَبِي رَبَاحٍ قَالَ: قَالَ لي ابْن عَبَّاس رَضِي الله عَنهُ: أَلا أريك امْرَأَة من أهل الْجنَّة؟ فَقلت: بَلَى. قَالَ: هَذِهِ الْمَرْأَةُ السَّوْدَاءُ أَتَتِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَتْ: إِنِّي أصرع وَإِنِّي أتكشف فَادع الله تَعَالَى لي. قَالَ: «إِنْ شِئْتِ صَبَرْتِ وَلَكِ الْجَنَّةُ وَإِنْ شِئْتِ دَعَوْت الله تَعَالَى أَنْ يُعَافِيَكَ» فَقَالَتْ: أَصْبِرُ فَقَالَتْ: إِنِّي أَتَكَشَّفُ فَادْعُ اللَّهَ أَنْ لَا أَتَكَشَّفَ فَدَعَا لَهَا