Are there instructions in OT , specifying guidelines on maintenance of tombs?

In Matt 23:27, Jesus equates Sadducees and Pharisees to whitewashed tombs. Before the advent of long- lasting tombstones , the tombs , mostly formed of mud, used to be whitewashed and decorated with flowers on special occasions . Poor families which cannot afford to pay for permanent tombs, still have the tombs of their dear ones whitewashed, in many countries. That the practice was prevalent at Jesus' time indicates that Jews had been following it since long. My question therefore, is: Are there any instruction in the OT, which deal with maintenance of tombs, especially whitewashing ?