Construction of gauge field configurations A/sub ..mu..//sup a/(x) in an SU(2) Yang-Mills theory satisfying everywhere F/sub ..mu nu..//sup a/(x) = 0 is discussed. Using the method of sections, a field related to the zero-size limit of an instanton is presented. The corresponding limit for a multi-instanton solution requires a generalization of the Landau gauge condition. Finally, an alternative method and explicit solution is given for the case of delta/sub ..mu../A/sub ..mu..//sup a/ = 0.