During his three-set victory in Spain, the world number one was issued with a time violation warning for taking too long to begin the next point.
However, Murray responded by taking the blame for Djokovic going over the designated 25-second limit, leading to the Serbian publicly thanking his rival on Twitter.
.@andy_murray really grateful and honoured to have witnessed your sportsmanship tonight. Tennis is lucky to have you as ambassador.Thank you— Novak Djokovic (@DjokerNole) May 8, 2016
The showdown in Madrid was their 32nd meeting, with Djokovic's win his 23rd of their storied rivalry.