To welcome somebody is not simply to sit at home and wait.
When you expect a guest, you gently sprinkle water in the entrance hall and get ready to greet him at the gate, or even pick him up at the station.
You should not be taken aback when somebody visits. You should be well prepared for the occasion and give your guest an appropriate welcome.
This is the same when practicing a technique in aikido. Think of your partner as a guest, and his attack as a visit. Always maintain mind and posture prepared to welcome your partner -be prepared to welcome anything that might happen to you.
from Anna Sanner’s Book ‘Dance with Heaven and Earth’ and Shihan’s teachings on the tatami.