A very wealthy merchant named Eswara lived in a city called Vikantakapuram. One day, his four sons-in-law arrived from Ujjain with their families to enjoy the hospitality of their father-in-law. Eswara did everything to make them happy and contented. Six months passed but the sons-in-law did not show any sign of leaving for Ujjain. Eswara was angry but could not directly tell his sons-in-law that they had overstayed.
One day, the father-in-law told his wife, "These guys are enjoying their stay here and are reluctant to leave. I am sure they will not leave unless we offend them in some way. Tomorrow, when they come for dinner, don’t offer them water to wash their feet. They will regard this as an insult and will certainly leave."
Eswara’s wife did, as her husband wanted her to do.
The first son-in-law was offended because water was not ready for him to wash his feet and left in a huff.
The second son-in-law was not happy with the place assigned to him at the table and left ranting.
The third complained about the quality of food and packed his bags.
Syamalaka, the fourth son-in-law, however, did not mind these insults and stayed on. The father-in-law had, therefore, to throw him out of his house by force.
A wise man needs only a single sign to get any point.