When Rabbi Judah died, he left in his will four commands to his children. In the first place, he forbade his children to dwell in a place called Naza, for the people there were frivolous and nothing good could be learnt from them, but only evil.

Secondly, he forbade them to sit on the bed of a Cuthean woman in her house. For it once happened to R. Papa that a Cuthean woman owed him some money and he went to her house frequently to ask for the payment of his debt.

One day – it was a Sunday – the Cuthean woman took her son and strangled him and put him in her bed and covered him up so that no one should see him.

R. Papa came as usual and asked for his money.

The woman said to him: "Pray, take a seat on the bed while I go into the next room to fetch the money."

R. Papa sat down on the bed. The woman went into the next chamber and tarried there a while. Then she came back, crying: "Woe, woe! You have killed my son!"

When R. Papa heard this, he fled the country. Therefore, no one should sit on a bed in the house of a Cuthean woman.

In the third place, he commanded that they should never try to evade the tax gatherer, for he might overtake them and take all their money away.

The fourth command was that they should not stand in front of an ox when he returns from the meadow, for Satan sits between his horns. This is true especially in the month of Nisan and in the case of a black bull.