When the prostitutes of Delhi made tauba when Shah Ismaeel dehalwi the grandson of Shah Wali Ullah Dehalwi lectured them.

When the prostitutes of Delhi made tauba when Shah Ismaeel dehalwi the grandson of Shah Wali Ullah Dehalwi lectured them.
There were some women going to dance, Shah Ismaeel saw them and asked his companions. Who are these women, what is their religion, he was told they are prostitutes and they have no religion. He said they must have religion for the name sake,
He was told they call themselves Muslims, Shah Ismaeel said we must inform them about the truth as they are our Muslim sisters even if they are zaaniya and dancers. He was stopped that other sects already malign you. But when the time came he went to their place.
He loudly said, O women slaves of Allah open the door and listen to what this faqeer says. Some girls came and thought he is a beggar and gave him some money but he insisted to let him in. When he came in the women were practicing dance and their leader woman came in and she knew he is some scholar. Shah Ismaeel said, You have sung songs for people all your life, Today listen to this faqeer. All the girls came and started listening to him.
Shah Sahib started his lecture with Surah at-Tin and did its translation and recited the verse where Allah honored women and men.
(And We have certainly honored the children of Adam and carried them on the land and sea and provided for them of the good things and preferred them over much of what We have created, with [definite] preference.)
[17 : 70]
Then recited the verse where Satan said he will mislead the people,
(And I will mislead them, and I will arouse in them [sinful] desires, and I will command them so they will slit the ears of cattle, and I will command them so they will change the creation of Allah .” And whoever takes Satan as an ally instead of Allah has certainly sustained a clear loss.)
[4 : 119]
Then he recited the verses about what will happen to wrong doers.
(And you will see the criminals that Day bound together in shackles,
Their garments of liquid pitch and their faces covered by the Fire.
So that Allah will recompense every soul for what it earned. Indeed, Allah is swift in account.)
[14 : 49-51]
The girls started crying and when he saw this he started telling them about tauba, and told them Allah becomes very happy when a sinner repent and recited:
(Say, “O My servants who have transgressed against themselves [by sinning], do not despair of the mercy of Allah . Indeed, Allah forgives all sins. Indeed, it is He who is the Forgiving, the Merciful.)
[39 : 53]
Then he informed them how Allah replace the sins into righteous deeds after repentance.
(Except for those who repent, believe and do righteous work. For them Allah will replace their evil deeds with good. And ever is Allah Forgiving and Merciful.)
[25 : 70]
Recited various verses and ahadith on tauba, even men were listening to him from outside the gates and there was rush, he asked the girls to do wudu and pray two rakah Nafil when they went into sajida, Ismaeel dehalwi raised his hands and asked Allah to make them pious and asked Allah for their guidance.
It is said that when a girl who was most beautiful with the name of moti (i,e, pearl) was grinding lentils with a mill for the horses of Mujahideen, her past friends said to her:
Was that life better where you would wear beautiful clothes and people would spend money on you Or this life where your hands have papule (a small pimple or swelling on the skin, often forming part of a rash), she replied: By Allah I have never found happiness in the life of sin..
[Islami tareekh k dilchasp aur Iman Afreen waqiyat p, 62-79, the asl of this is mentioned in Tazkira tul Shaheed]