Tzadikim their money is dearer than their body

 Sotah (12a) Yocheved took for Moses an ark of bulrushes   why just bulrushes? R. Eleazar said: Hence it is learnt that to the righteous their money is dearer than their body; and why so?  That they should not stretch out their hand to robbery.

Rabbeini Bachya (Bereishis (35:25)“when Yaakov had remained alone, etc.” Our sages in Bereshit Rabbah 77,3 state that these words should be read as if Yaakov returned for his jug (read לכדו instead of לבדו). This teaches that Yaakov went back across the river to retrieve small vessels which had been overlooked. This teaches that the righteous are very meticulous even with relatively low-cost items seeing that when you acquire things by making certain none of them has been tainted by being stolen or otherwise illegally acquired, one does treasure what one has more than do other people who do not mind to acquire things less honestly. This is Rashi’s approach to our verse.