What is the ruling regarding conditional manumission based on the characteristics of a person entering a dwelling?

Primary text

If the condition is: 'If a man enters the house, then a specific slave of mine is free,' and a person possessing all described characteristics—tall, black, and a jurist (*faqih*)—enters, ten slaves are freed. This occurs because the conditions listed are: 'a man' (leading to one slave free), 'tall' (leading to two slaves free), 'black' (leading to three slaves free), and 'a jurist' (leading to four slaves free). When a person embodying all four conditions enters, the total is ten freed slaves, as the conditions aggregate.