21. Muhammad ibn al-Hassan and Ali ibn Muhammad ibn Bandar have narrated from Ibrahim ibn Ishaq al-Nahawandi from ‘Abd al- Rahman ibn Hammad from Abu Maryam al-Ansari in a marfu‘ manner has said the following: “Once al-Hasan ibn Ali عليه السلام came out of the bathhouse and someone met him and said, ‘I wish you a fine bathing Istihmam.’ He (the Imam) said, ‘Oh lowly one, why does the word ’Ist’ (meaning your seeking bath or the word’s other meaning which is ‘buttock’) need to be mentioned?’ He then said, ‘I wish you a good ‘Humaym’ . He (the Imam) said, ‘Did you not know that ‘Humaym’ means perspiration?’ He then said, ‘May your bathhouse be nice.’ He (the Imam) said, ‘If you wish a nice bathhouse then what is for me in it? You should instead say, ‘I wish purity for what is nice of you and nicety of what is pure of you.’”