A possible concise summary is:
Sajila breaks up with Shani, who loves her and has rejected Shanzay, a rich girl who wants to marry him. Sajila tells Shani that he is nothing without Shanzay and challenges him to prove his love for her by marrying Shanzay. Shani is shocked and angry.
Here are the key facts extracted from the text:
1. Shani is in love with Sajila, but his sister Nadia and brother-in-law Khawar want him to marry Shanzay, a rich girl who also loves him.
2. Shani went to meet Khawar to apologize for being rude to him, but Khawar tried to convince him to leave Sajila and accept Shanzay.
3. Sajila broke up with Shani and told him to marry Shanzay, pretending that she doesn't love him anymore.
4. Nadia and Khawar's mother Kulsoom went to talk to Sajila's aunt Farzana about fixing a wedding date for Shani and Sajila, but Sajila refused to marry Shani in front of them.
5. Nadia was happy that Sajila made it easy for her to get Shanzay married to Shani, but Kulsoom was worried that Shani would not agree.
6. Shani confronted Sajila and asked her what she wanted him to do for her love, and she told him to marry Shanzay.