The story of Satyabhama and Tulsi leaf
Once, Satyabhama felt proud of being most loved by Shri Krishna. One day, Narada, ji arrived there. Satyabhama asked him a trick so that she gets the same husband in all future lives. Narada ji advised her, whatever one donate in the life, gets in future life. If she wants Shri Krishna in next life, then donate him. Satyabhama was ready to donate him but wondered who would accept him as donation. Ultimately, Narada ji agreed to accept the donation of Shri Krishna. Satyabhama donated Shri Krishna with resolve.
Narada ji took Shri Krishna to move from there. Satyabhama asked Narada ji where he is taking her husband. Narada ji told her, just now she has donated him Shri Krishna and now he has authority over him. Whatever is donated, it belongs to the person whom it is donated. Now Shri Krishna belongs to him.
Satyabhama realized her fault. She demanded Shri Krishna back but Narada ji refused. When other queens heard the incident, they came running. But Rukamani did not come. All queens started pleading Narada ji to return their husband. Narada ji again said them that Shri Krishna has been donated by Satyabhama and if they desire to take him back, they should give him gold of equivalent weight of Shri Krishna. Satyabhama was delighted to hear this. All queens brought their gold ornaments. But to their utter surprise, all their ornaments were less in weight than that of Shri Krishna. Now, the queens trembled and brought more ornaments still the weight was less. The queens could not buy Shri Krishna against hundreds of kilogram ornaments. Shri Krishna played all this to destroy the pride of Satyabhama.
Now, all queens plunged into thoughts, what to do now. Satyabhama has done disaster by donating Shri Krishna. At last, Satyabhama decided to take the help of Rukamani. Rukamani understood the secret. She said, the almighty cannot be bought by gold. She placed one holy tulsi (basil) leaf with devotion. Immediately, the Shri Krishna side of scale moved up.
Shrimad Bhagwat Mahapuran by Shri Ramchandra Keshav Dongra ji Maharaj