Man Lā Yaḥḍuruh al-Faqīh
Hadith 16054803 - وَ سَأَلَ أَبُو اَلصَّبَّاحِ اَلْكِنَانِيُّ أَبَا عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ : عَنِ اَلَّتِي تَحِيضُ فِي كُلِّ ثَلاَثِ سِنِينَ مَرَّةً كَيْفَ تَعْتَدُّ قَالَ "تَنْظُرُ مِثْلَ قُرُوئِهَا اَلَّتِي كَانَتْ تَحِيضُ فِيهِ فِي اَلاِسْتِقَامَةِ فَلْتَعْتَدَّ ثَلاَثَةَ قُرُوءٍ ثُمَّ لْتَتَزَوَّجْ إِنْ شَاءَتْ".
Hadith.4803 - Abu al-Sabbah al-Kinani asked Abu Abdullah (as) about a woman who menstruates once every three years-how should she observe her waiting period?
Imam (as) said: "She should consider the usual menstruation cycles she used to have when her menstruation was regular and observe a waiting period of three menstrual cycles. Then, if she wishes, she may marry."