In yet another version of Muslim:

Verily! I (‘Aisha) used to scrape it (the semen) off his garment with my nails while it was dry.

وَفِي لَفْظٍ لَهُ: { لَقَدْ كُنْتُ أَحُكُّهُ يَابِسًا بِظُفُرِي مِنْ ثَوْبِهِ } [1]‏ .‏