Offering green grass of course means feeding them fresh grass but the
implication is that they should be taken out for grazing. They should have
ample time for wandering as they like and nibbling a bit of this and that. They instinctively know what herbs and grasses they require to maintain good health.

One should not think that keeping cows tied up 24-hours a day and
feeding them fresh grass constitutes worship. Cows have been born with four legs for a good reason.

It does not please them to be tied to a three-foot rope so they only have the option to sit or stand. They like to walk, spar, scourge the earth and occasionally run and jump. If taking them out for grazing is not possible, then the next best thing is that after they are fed, they should be offered a place to roam free, engage in recreation or sit in a clean place and
ruminate.